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Functions
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- ${macroExp}
- =expression
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- [a:b]
- @
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- ~( i )
- A()
- A.( x,... )
- [a1,...an]
- abs()
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- align()
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- dynadb.close()
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- E()
- E()
- elapse()
- elasticnet()
- end s
- enum()
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- es_close()
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- m()
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- minute()
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- mode()
- modify()
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- mongo_open()
- mongo_shell()
- month()
- movefile()
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- mul()
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- n.f(x)
- name()
- new()
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- norm()
- norminv()
- not()
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- null
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- nvl()
- o()
- olap_close()
- olap_open()
- olap_query()
- ones()
- open()
- or()
- oss_bucket()
- oss_close()
- oss_copy()
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- output()
- p()
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- pca()
- pchipmthd()
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- periods()
- permut()
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- pi()
- pivot()
- pjoin()
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- polyfit()
- pos()
- power()
- prior()
- proc()
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- property()
- pseg()
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- pseudo()
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- Qconnect()
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- query()
- r.(x,...)
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- r.F=x
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- rand()
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- rankm()
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- return xi
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- s3_bucket()
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- sap_client()
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- sbs()
- se()
- second()
- segp()
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- seq()
- sert()
- setenum()
- sf_close()
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- sf_query()
- sf_wsdlclose()
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- sg()
- shift()
- sign()
- sin()
- sinh()
- size()
- skew()
- skip()
- sleep()
- smooth()
- sort()
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- spark_open()
- spark_close()
- spark_cursor()
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- spark_read()
- spearman()
- splinemthd()
- split()
- splserver()
- sqlparse()
- sqltranslate()
- substr()
- stax_close()
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- stax_cursor()
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- sqrt()
- step()
- string()
- structure
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- svm()
- swap()
- switch()
- syncfile(hs,p)
- system()
- T()
- tarcorskew()
- tan()
- tanh()
- time()
- tinv()
- to()
- top()
- total()
- transpose()
- trim()
- true
- try
- ttest_p()
- typeof(x)
- union()
- update()
- upper()
- urlencode()
- uuid()
- v()
- var()
- var(V)
- var(x)
- was_bucket()
- was_close()
- was_copy()
- was_file()
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- words()
- workday()
- workdays()
- write()
- ws_call()
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- xjoin()
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- xlscell()
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- xlsexport()
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- xml()
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- xunion()
- year()
- ym2_close()
- ym2_env()
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- ym2_model()
- ym2_pcfload()
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- ym2_predict()
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- zeros()
- zip()
- zip_add()
- zip_close()
- zip_compress()
- zip_del()
- zip_encrypt()
- zip_extract()
- zip_open()
- Intersection of sequences
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- Chart Elements
splinemthd()
Description:
Get cubic spline interpolation.
Syntax:
splinemthd(x,y,newx)
Note:
External library function (See External Library Guide).
x,y are a coordinate vector of an existing point, and newx is a query point vector. The function returns the interpolation vector corresponding to the query point specified by newx; the vector’s value is determined by x and y’s cubic spline interpolation values.
Parameter requirements:
1. The range of newx must not exceed the original boundaries of x;
2. x should be strictly monotonic increasing, but no requirements for y; x and y should have same length;
3. Null values and infinite values are not allowed.
Parameter:
|
x/y/newx |
A one-dimensional sequence. |
Return value:
Sequence
Example:
|
|
A |
|
|
1 |
=[1.0,3.0,4.0,8.0,12.0] |
|
|
2 |
=[3.0,5.0,7.0,15.0,21.0] |
|
|
3 |
=[2.0,5.0,7.0,9.0,10.0] |
|
|
4 |
=splinemthd(A1,A2,A3) |
|
